import math
print("""Dad!Dad!Dad!Dad!Dad!Dad!
Dad!Dad!Dad!Dad!Dad!Dad!Dad!Dad!Dad!""")
my_love="18085638288"
my_ex=my_love
print(my_ex)

a=-1
b=-2
c=3
print((-b+math.sqrt(b**2-4*a*c))/(2*a))
print((-b-math.sqrt(b**2-4*a*c))/(2*a))
print(len("anshaofeng"))

nu=None
tru=True
fas=False
print(type(tru))